Tool-holder.



E. KLEINEGRIS.

TOOL HOLDER. APPLICATION FILED FEB. 1. 1917.

Patented May14, 1918.

'2 SHEETS-sneer l.

.im V//%% if E. KLEINEGRIS.

TO0L HOLDER.

APPLICATION FILED FEB. I. |911.

Patented May 14, 1918.

2 SHEETS-SHEET 2.

ENGELB'ERTUS KLEINEeRIs, ,or CHICAGO', ILLINOIS.

TOOL-HOLDER.

Specicatinn' of Letters' Patent.

Patented May 14, "1918.

Application led'fFebruary 1, 1917. iSeraIsNo. 145,935.

TaaZZ .fwlwmc't Imag/romena.'

.Beit lrnownthat I, '.Eivennnnurus KLEINE- GRIspa citizen of the United States, .and .a residenbof .the icity-.of .Ghicagmfinthe-county ofeGoolnandlState .ofjlllinois,.l have invented certain `new and useful ,.llmprovements `.in Tool-Holders .and `I dohereby I.declare that the vlfollowirigis .a -full,. clear, and )exacty dcscriptionefithe samefreferencefbeing yhad vto the, .accompanying drawings,- and .to the ',numerals of .reference marked thereon, which form apart ofthisspecication. y

V.Onesdiiiicultyexperienced the :use of planing. machines provided with .adju-stable tool holdersisthe wearingdewn ofthe tol ecgepreceding .a new cut, 'inasmuch-.as the tool rides upon ithe edge ofthe cut `last made Aas the `work .is `moved past .thegtool backiowar'd .initial position.` Some types o'f..tool holders have beendes'igned .which permit ..a .reti-active ,movement .of 'fthe tool so that. theheel .ofthe `.cuttingtool .rides uponthe workiinits .retract'ive :or-`backiward movement. on theimachine, Atand .the tool .then falls finto 1:proper cutting l position .after the work vthen.liasnioved therepast. Such tool hcldershave not, however, fbeen' :suiiici'ently adjustable- `to ipermit use. of the .tool for the .manydiiiferentllinds of cuts required.

invention relates toarotatably adjlustahleftool .'holder which. permits the tool tofbelplaccd position foralmost -any kind'eo'f cut, and in. all its positions is retractableto .a `certain extent upon a lpivot forniinga .part thereof so that-the vtool. edge l .is not forced tagainst the work during retracti-ve movement of the work-to thus wear away ithe cutting edge o'f 'the tool.

Itis an object therefore #of "this invention to construct an adjustable tool holder wherein the carrying memberforfthe `tool lispivotally 'mounted upon4 a tool hol'der'bracket permitting 4 bodily adjustments o'ffthev entire tool fhoilder Ito properly :position jthe tool, and 'as well perniittiing secondaryadjustments of the tool holder and tool within the holder, and with the tool vholder pi-votally mounted in all positions Aof adjustment whereby a retractive movement thereof :in a direction opposite tofthat of a cut made, is permitted.

It is falso an objectofthis invention .to construct .arotatably adjnsta'ble .tool holder mounted upon .a carrier memberand with thetool vholder .piwotally .mounted te ;per-

mit :retractive ymovements thereof .to permit the ihee'l Aofthe cutting tool to ride upon the work. `@hiring la backward lmovement of --the work preliminary tov a fcutting operation.

.lt is furthermore ari-.objectief this invention to provide an adjustabletool holder comprising airotatableehead adapted'k tointerlock in dii'erent .adj usted positions I.with the-stationary head, and withfa pivotal :tool carrying block upon said rotatable head, which fpermits .a -retractive .movement of the tool vduring .a reverse 'movement -of -the work ortool, uzhichever is `movedfto prevent-,wearingidown `of the cutting-cdgelofV the tool by contact with the work.

`(-)ther and ifurther important objects of thefinvention will lbe evident .frein-.thev disclosure@ inthe s peciiicationand drawings.

The invention (in apreferred -for1n) is illustrated .in the drawings and hereinafter more fully described.

Onithe drawings g j Figure lis a .reduced side 4elevation `of .a conventional type of tool carrier .mechanism equipped with Aa tool holder embodying the principles .of .my invention. Y

j Fig. 2 :is an enlarged face view of Athe tool holder showing the possible adjustments thereof for use .with `dilferent types of tools. y

Fig. 3 is asectional detail on line 3 3 of Fig. 1, with parts. omitted andparts .in elevation.

4 is .a fragmentary detail section taken .on line .4-4 of Fig. 3.

Fig. '.5 is an end view of the mechanism shownin Fig. .4.

Fig. .6 is Ya fragmentary similar face View of the complemental stationary head member of 4the 'tool holder.

Fig. 7 is a View similar to Fig. .-2, illustrating .a possible l,adjustment of the tool holder.

Fig. 8..is.an elevational view of the inner or 'back surface of ythe pivoted clamping block-fof Vthe tool tholder shown in Fig. 3.

As shown on the drawings:

The reference numeral 1, indicates as a whole a tool carrier forming a Ipart of a planing machine, and secured ladjustably thereon lby means of vbolts 2, is along rupright shank portion 1.3, ofy oneelement ofthe tool holder which has formed at yits lower ejset end a stationary head 4L. Said head 4, is aXially Acored out, and engaged `therethrough is the stud extension 5, of a rotatable head or disk 6, and the outer threaded end of said shank 5, extending beyond said head 4, is provided with a nut 7, which bears downwardly upon a washer 8, seated in a recessed portion of the head 4. rlhe face of said disk or head 6, adjacent to the head 4, is provided with a series of apertures or holes 9, arranged equi-distantly at angles of 450 apart, and secured rigidly upon or formed upon the adjacent surface of the stationary head 4, are a pair ofv pins l0, arranged 90O apart, and adapted to engage with two of said apertures 9, whereby said respective heads 4 and 6, are locked in stae tionary relation.

Formed upon the opposite surface of said rotatable disk or head 6, are parallel ribs or guide flanges 11, and fitted therebetween is a pivoted'clamping block 12. Said pivoted clamping block is held engaged between said ribs or flanges 11, by a pintlel 13, engaged through one end thereof and through said ribs or flanges 11. At its upper end, said block is cored out or provided with a recess 14, and engaged therein is a tension spring 15, which is also engaged in a cored out recess provided in the adjacent face of the rotatable disk or head 6, so that the pivoted clamping block is held normally in close contact with the head 6.

The outer end of said pivoted clamping block 12, is provided with rectangular aperltures 16'and 17 arranged therethrough at right angles to one another, as shown clearly in Figs. 2 and 7, adapted to receive a cutting tool 18, engaged through either one thereof. Said clamping block is provided with two clamping bolts to hold a tool in place, one of said bolts denoted by the reference numeral 19, adapted to hold a tool engaged in the rectangular tool hole 16, and the other bolt, denoted by the reference numeral 20, and adapted to hold the tool engaged in either ofthe rectangular tool holes. The fragmentary broken away portion at the lower part of Fig. 2, illustrates the possible use of a tool 21, in the tool hole 17 and one of different shape from the 50'- tool 18. In this instance the tool 21, is

mounted in the tool hole 17,;l so that the same pivotal action on the pivot 13, is obtained as in the case of the tool 18, due to the fact that the tool 21, is a side cutting tool, shown in the present instance, as cutting a T-groove. The tool 22, shown in Fig. 7, is a reversible tool for either right or left hand work, and may be mounted in place through either one of the tool holes 16 or 17 or, as shown, a readjustment of the head 6, may be made.

The operation is a follows:

A tool may be engaged in either one of t;he iool holes 16 or 17, and suitably clamped rigidly therein by respective bolts 19 or 20,

work will swing upon its pivot to causeV the heel ofthe tool to contact the work and the cutting edge will not be worn away. Due to the fact that the tool may be mounted in either one of two right angle positions in the clamping block 12, it is obvious that a tool may be so disposed that the pivot for the clamping block is always properly disposed to permit a retractive pivotal'movement of the clamping block during reverse movements of the tool or work intermediate a cutting operation. Also, due to the factl that the entire head or block 6, is rotatable upon the stationary head 4, itis obvious that a tool maybe properly positionedv to secure the desired cut, and inasmuch as the pivot 13, is mounted in said adjustable head 6, it is always properly positioned to'permitl an v easy retractive pivotal movement of the tool clamping block when occasion requires.' Due to the number of apertures 9",

provided for engagement .with the stationary pins 10, it will be seen that the clamping head 6, on which the tool is carried `is susceptible of a numberbf adjustments. f

The spring 15, connectedwithin the pivoted clamping block 12, always operates to normally maintain the same in position for a cutting operation by the tool.l When a retractive movement of ,the vwork is made, preliminary to another cut, the toolrides out into the dotted line position'shown in Fig. 3, so that the heel of the tool 'bears against the work, and thev cutting edge is protected, and upon moving away from the work at the end of the retractive movement,

the spring 15, pulls the tool holder and tool back into cutting position such as shownl in full lines.

Il am aware that various details of` construction may be varied, through a wide range without departing from ythe principles of this invention, and I therefore do not vpurpose limiting the patent granted otherwise than necessitated by the appended claims.

I claim is my invention: l i.

1.V A tool holder comprising a stationaryV head, outwardly projecting pins secured thereto, a rotatable head provided with a central stud and apertures arranged concentrically around .the stud to receive said pins therein, a tool holder block pivoted to the rotatable head, said block and rotatable head being recessed, and a spring in said recess adapted normally to hold the block block at one end and to the rotatable head in the rotatable head. at its opposite end.

2. A tool holder comprising a stationary In testimony whereof I have hereunto` head, a rotatable head, interfitting pins and subscribed my name in the presence of two 5 recesses for relative adjustment hof said subscribing witnesses.

heads, means rigidly securing the eads t0- gether, flanges integral with the rotatable ENGELBERTUS KLEINEGRIS' head, a tool block pivoted between the Witnesses: iianges, and a pulling spring secured in a CHARLES W. HrLLs, Jr., 10 recess in the block and connected to the EARL M. HARDINE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

